Across
- 2. the spread of social institutions (and myths and skills) from one society to another
- 4. a source of materials to nourish the body
- 7. the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level
- 8. a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways
- 10. a change of position that does not entail a change of location
- 12. a tiny cavity filled with fluid in the cytoplasm of a cell
- 13. the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism
- 14. the main organ of photosynthesis and transpiration in higher plants
- 16. a single complete act of breathing in and out
Down
- 1. the ability to respond to physical stimuli or to register small physical amounts or differences
- 3. magnifier of the image of small objects
- 5. a part of the cell containing DNA and RNA and responsible for growth and reproduction
- 6. an organelle in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell
- 9. plastid containing chlorophyll and other pigments; in plants that carry out photosynthesis
- 11. the bodily process of discharging waste matter
- 15. a specialized part of a cell; analogous to an organ